load_example('faces') now returns numpy arrays again.
Merge branch 'master' of github.com:amitgroup/amitgroup into dev-gustav2
Merge branch 'dev-gustav2' of github.com:amitgroup/amitgroup into dev-gustav2
Merge branch 'dev-gustav2' of github.com:amitgroup/amitgroup into dev-gustav2
Experimenting with sparse matrices in bernoulli mixture model.